His efforts paid off, and he invented a new product. He soon launched Pemberton Chemical Company in partnership with Frank Robinson. Robinson gave Pemberton the marketing knowledge he needed to advertize his product. By putting the names of the two medical ingredients together, Robinson came up with the name Coca-Cola. He also used a unique script to write Coca-Cola which would became its trademark. Pemberton became sick, to what was thought as complications from his morphine addiction. He decided to sell his company and in 1887 Willis Venable and George Lowndes purchased two-thirds of the rights. In August 16, 1888, Pemberton passed away. In 1891, public attitudes were changing towards cocaine. It became general knowledge that cocaine could be harmful. Frank Allen describes that the negative aspects of cocaine were becoming a national debate.